Assigning unique SNMP identifiers

• US 6,757,280 B1
• Filed: 10/02/1998
• Issued: 06/29/2004
• Est. Priority Date: 10/02/1998
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Wilson, Richard Alexander Jr.
• Primary Examiner(s): Duong, Frank
• Application Number:
  US09/165,115
• Time in Patent Office: 2,097 Days
• Field of Search: 370/389, 370/392, 370/395.3, 370/469, 709/223, 709/245, 340/825.35, 340/825.44, 707/1, 707/10, 707/100, 707/104
• US Class Current: 370/389
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]

Abstract

Managing an SNMP device over a network by transmitting SNMP messages to the managed device while ensuring that an SNMP packet identifier for each message is unique. The SNMP packet identifier is selected in correspondence to the physical memory address at which the SNMP message is stored, and may be the first or last such memory address, or any memory address in between. Because the packet identifier corresponds to the physical memory address of the message, each packet identifier is guaranteed to be unique since subsequent messages cannot occupy the same physical memory address as a prior message unless the prior message is already safely gone.

Claims

1. A method for assigning an identifier to each of network messages, wherein a network message is issued to a device, comprising the steps of:

storing a network message in a memory;

obtaining a number corresponding to a physical memory address of a memory location at which the network message is stored;

transmitting to the device the network message and the obtained number as the identifier of the network message;

receiving from the device a response including an identifier;

comparing the identifier included in the response with the identifier of the transmitted network message so as to determine whether the response corresponds to the transmitted network message; and

deleting the network message from the memory.

2. A method according to claim 1, wherein the number corresponds to a first physical memory location of the network message.

3. A method according to claim 1, wherein the number does not correspond to a first physical memory location of the network message.

4. A method according to claim 1, wherein the number corresponds to a last physical memory location of the network message.

5. An apparatus for assigning an identifier to each of network messages, wherein a network message is issued to a device, comprising:

memory including a region for storing executable process steps; and

a processor for executing the executable process steps;

wherein the executable process steps include the steps of;

storing a network message in a memory, obtaining a number corresponding to a physical memory address of a memory location at which the network message is stored, transmitting to the device the network message and the obtained number as the identifier of the network message, receiving from the device a response including an identifier, comparing the identifier included in the response with the identifier of the transmitted network message so as to determine whether the response corresponds to the transmitted network message, and deleting the network message from the memory.

6. An apparatus according to claim 5, wherein the number corresponds to a first physical memory location of the network message.

7. An apparatus according to claim 5, wherein the number does not correspond to a first physical memory location of the network message.

8. An apparatus according to claim 5, wherein the number corresponds to a last physical memory location of the network message.

9. Computer-executable program code stored on a computer-readable medium, the computer-executable program code to assign an identifier to each of network messages, wherein a network message is issued to a device, the computer-executable program code comprising:

code to store a network message in a memory;

code to obtain a number corresponding to a physical memory address of a memory location at which the network message is stored;

code to transmit to the device the network message and the obtained number as the identifier of the network message;

code to receive from the device a response including an identifier;

code to compare the identifier included in the response with the identifier of the transmitted network message so as to determine whether the response corresponds to the transmitted network message; and

code to delete the network message from the memory.

10. Computer-executable program code according to claim 9, wherein the number corresponds to a first physical memory location of the network message.

11. Computer-executable program code according to claim 9, wherein the number does not correspond to a first physical memory location of the network message.

12. Computer-executable program code according to claim 9, wherein the number corresponds to a last physical memory location of the network message.

13. A computer-readable medium which stores computer-executable process steps, the computer-executable process steps to assign an identifier to each of network messages, wherein a network message is issued to a device, the computer-executable process steps comprising:

a storing step to store a network message in a memory;

an obtaining step to obtain a number corresponding to a physical memory address of a memory location at which the network message is stored;

a transmitting step to transmit to the device the network message and the obtained number as the identifier of the network message;

a receiving step to receive from the device a response including an identifier;

a comparing step to compare the identifier included in the response with the identifier of the transmitted network message so as to determine whether the response corresponds to the transmitted network message; and

a deleting step to delete the network message from the memory.

14. A computer-readable medium according to claim 13, wherein the number corresponds to a first physical memory location of the network message.

15. A computer-readable medium according to claim 13, wherein the number does not correspond to a first physical memory location of the network message.

16. A computer-readable medium according to claim 13, wherein the number corresponds to a last physical memory location of the network message.